Al2O3-TiO2 SOL-GEL MIXED OXIDES AS SUITABLE SUPPORTS FOR THE REDUCTION OF NO BY CO |
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| Authors: | Marina Morá n-pineda, Salvador Castillo, Maximiliano Asomoza Ricardo Gó mez |
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| Affiliation: | (1) Simulación Molecular Eje Central Lázaro Cárdenas 152, Instituto Mexicano del Petróleo, México D.F., 07730;(2) Unidad Profesional Adolfo López Mateos, Instituto Politécnico Nacional, Edif. 7, 07738 México, D.F;(3) Chem. Dept. AP 55-534, Universidad A. Metropolitana-I, México D.F., 09340 |
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| Abstract: | Sol–Gel alumina-titania supports were prepared by the co-gelling aluminum tri-sec-butoxide and titanium isopropoxide (10 wt.% TiO2) at pH 3 and pH 9. Supports showed specific surface areas higher than 250 m2/g, and Lewis acidity was observed by FTIR pyridine adsorption. Cu°, Cu1+ and Cu2+species on impregnated Cu/Al2O3-TiO2catalysts were identified by means of FTIR-CO adsorption. A correlation between Cu+/Cu2+ abundance and the activity for NO reduction by CO is reported. |
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| Keywords: | Copper/alumina-titania catalysts alumina-titania supports NO reduction by CO alumina-titania sol-gel supports |
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